package com.changgou.file.util.controller;

import com.changgou.entity.Result;
import com.changgou.entity.StatusCode;
import com.changgou.file.util.FastDFSClient;
import com.changgou.file.util.FastDFSFile;
import io.netty.util.internal.StringUtil;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

/**
 * @author lqq
 * @date 2020-02-24 17:06
 */
@RestController
@RequestMapping("/fill")
public class FileController {

    @PostMapping("/upload")
    public Result uploadFile(MultipartFile file) {

        try {
            //1.判断文件是否存在
            if (file == null) {
                throw new RuntimeException("文件不存在");
            }

            //2.获取文件的完整名称
            String originalFilename = file.getOriginalFilename();
            if(StringUtils.isEmpty(originalFilename)){
                throw new RuntimeException("文件不存在");
            }

            //3.获取文件的扩展名称
            String substring = originalFilename.substring(originalFilename.lastIndexOf(".") + 1);

            //4.获取文件的内容
            byte[] bytes = file.getBytes();

            //5.创建文件上传的封装实体类
            FastDFSFile fastDFSFile = new FastDFSFile(originalFilename,bytes,substring);

            //6.基于工具类进行文件上传,并接受返回参数 String[]
            String[] strings = FastDFSClient.upload(fastDFSFile);


            //7.封装返回结果
            String url = FastDFSClient.getTrackerUrl() + strings[0] + "/" + strings[1];
            return new Result(true, StatusCode.OK,"文件上传成功",url);

        } catch (Exception e) {
            e.printStackTrace();
        }
        return new Result(false,StatusCode.ERROR,"文件上传失败");
    }
}
